Switching

Hi,We are deploying NAT in a 2801 router and when we execute the comand: sh ip nat statistics, we see missed paquets.We do not have high cpu proccess.We have high level of free memory.We have defined pool for the nat procedd but neither one is full.W...

We have a 4510r-E core, been up and running for 2 years. We also utilized about a dozen linksys and cisco 5 port workgroup hubs/switches. Saturday night every one of the hubs/switches stopped working and would not allow traffic through them. I've see...

Hi,I have 2 SPF modules in place in each of the above 2 switches that are located in different buildings. I can have only one link UP. Are there license requirements on this?The configurations are as follows:The 2 interfaces in 2960G-----------------...

Hi,I have a Cisco ESW520 8 port that is connected to a cisco catalyst 3560G.Our switch management is on VLAN 100 and vlan 1 is the data network.I have trunked the two switchs and on the interface of the 3560G is as follows:interface GigabitEthernet0/...

Over the years I've heard and read about MTU sizes and packet fragmentation, but as far as I can remember, in all the networks I've worked on, we've always left the configured MTU size as the default (1500), and applications seem to do just fine with...

Do you need to Vlan and segregate the voice traffic and apply QoS to ports on Cisco Catalyst Express 500 Series Switches?  Just discovered that these devices has no CLI.  Presently the site has 100+ IP phones on a flat network with no issues.  Any ad...

hi guys,Ive been stuck on this problem at work for couple of days now..and its so basic...that its almost embarrassing for me to ask this question.Anyways...i will go ahead and ask much smarter people out there I have this new device(HSM- 9000) devic...

I have 5 member 3750 switches in a mixed statck of 2 x 3750x and 3 x C3750G-48TS. All five run the same IOS 12.2(53)SE2.I noticed this morning that the master was no longer part of the statck and master switch function had transfered to the 2nd switc...

All,Anybody would know if possible to config vPC between the two 2148s and a Cat 3130? Basicaly, the 3130 will have connection to each of the 2148 and I would like to config the vPC between the two links.My question is; is it possible to have vPC bet...

Hello All,I did IPSEC setup on 1861 & UC520, but I'm Unable to Ping 10.1.1.1 (BVI1) from VLAN1 of 1861 router but we are able to ping BVI2 (192.168.2.1), also i want to Ping 10.1.1.1 (BVI1) from VLAN100 of 1861,Can anyone suggest me what conf need to...

Help me understand what I’m missing.  I understand that source trees use up more memory and shared trees use up less memory.  What I don’t understand is what is the point of using a shared tree if by default the leaf router switches over to the SPT (...

Hi !Do you know the difference beetwen Upgradable LAN Base Layer 2 vs 3 ?. Thanks by your help.

Hi All,I am adding about 100 VoIP phones to the 3750 switches. Because of lack of patches, the phones will shared the same VLANs with some PCs. I was wondering if there any type of QoS i can implement for the phones on the switch. Will I gain anythin...

a strange problem occurs with one of our remote subsidary locations.our users try to acces10.123.2.100 at destination site via mpls. the site can be seen by users and do their functions.problem is with trace output below. 5,6,7,8 are last 4 trace out...